Brush



P. J. MORCK BRUSH Filed May 18. 1922 aim mung Invenon: PETEQ. J, MoRcK T0 aZ Z whom .it may concern."

Patented 0a, 6, .1925.

' UNIT D.s'T-Arss PETER. J. monox, or SAN BRUSH.

Application filed May 18,

1 Be it known that I, PETER J. MORCK, a

citizen of theUnite-d States, and a resident "of thecit'y and countyof SanFrancisco,

an improved brush, wherein the bristles are fixedly embedded against dislodgement and so arranged and constructed that shrinkage or swelling of the bristles is compensated for.

A further object of the invention is to provide a brush having rubber gripped bristles mounted on a supporting handle so that the outer faces of the bristles will be maintained substantially parallel. Other 'ects and advantages will appear as. this description progresses.

In this specification and the annexed drawings, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms; and it is also to be understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying one sheet of drawin 's,

Fig. 1 represents a side elevation of a brush constructed in accordance with my invention.

Fig. 2 is a vertical section through Fig. 1 on the line 22.

Fig. 3 is a plan section view taken through Fig. 2 on the line 3-3.

In detail, the construction illustrated in the drawings comprises a brush consisting of the base portion 1, having a handle member 2 thereon.

The brush element is formed of the bristles 3, having the ends thereof impregnated or treated with rubber or a similar composition. The treated ends of the bristles 3 are arranged within a suitable metal frame 4, having its inner face 5 beveled so that the thicker portion of the frame 4 extends beyond the treated portion of the bristles while the inner edge of the .ing manner.

; 1,556,298 ATENT OFFI-c rnANoIsco, CALIFORNIA,"

1922. Serial No. 561,817.

frame lies substantially flush with the ends of said bristles. The beveled face 5 of the frame 4' engages the bristles so as to prevent the same flaring outwardly, and maintained in substantially parallelalignmentwith the outer face of the. frame 4. The bristles 3 are F arranged in rows within the interior of the frame '4 in either a. longitudinal or transverse position, as illustrated by the rows 6,

13 and 14 respectively. The metal partitions 10-14 are formed from a light gauge, sheet metal and consist of parallel side walls 15 and 16, end walls 17 and 18 and a bottom wall 19. This manner of constructing the partitions permits them tobe adapted to the shape of the rows of treated bristle ends if the thickness of the same be not uniform throughout. The ends and sides of all of the partition members 1014 are adapted to be spaced from each other and also to be spaced from the contiguous inner face of the outer frame 14.

. The sections of bristles and partitions are assembled within the frame 4 in the follow- The frame 4 is placed on one of its longer sides and 'a row of treated bristle ends laid in contact with the lower inner face of said frame and, also, in contact '7, 8', and 9 in Fig. 3, each of said rows be- M ing'separated and spaced apart by the re-- silie-nt partitions or'box frameslO, 11, 12,

with the inner end faces of said frame. The

partition 10 would then be laid on top of the treated bristle ends. A layer of treated bristle ends 6 would then be laid on top of the partition 10 and the respective partitions and treated bristle ends superposed, one on the other, in alternate relation, so as to fill the entire interior of the frame 4.

As previously described, the bristle ends are treated or impregnated with rubber or similar composition. When the treated bristle ends and'partitions have been arranged in the desired manner within the supporting frame 4, a pair of nails or rods 22 and 23 are passed through the frame 4,

so as to engage the alternate layers of treat- I impregnated ends may be vulcanized to form a hard homogeneous mass. After the vul-' canizing process, the bristles are suitably dried and allowed to set.

The type of brush illustrated, used in a painting operations and for other uses, is subjected more or less to moistened working conditions. The brush bristles, which are usually made from hair, straw, vegetable fiber and the like, thus, swell or expand when moistened and contract when dried. The usual method of binding the bristle ends within the brush cannot efficiently compensate for any contraction and expansion of the brush bristles due to moisture or the like, and, as a result, the same fall out or are so loose as to be pulled out when placed in the slightest contact with any article or surface. With a brush constructed after the manner of my invention, e: oansion and contraction are taken care of and compensated for by resilient and springy metal partitions 1014: and which automatically move into or out of their normal configuration by the swelling or contracting action of the bristles. Drilled blocks 20 are adapted to be arranged within the "hollow partitions 6 and 1a, through which wood screws or nails 21 may be passed for joining the brush part to the handle back 2 for securing the entire assembly in rigid and fixed position.

the vulcanized ends of said rows of bristles;

and means for securing said frame to a handle.

In testimony whereof, I have hereunto set my hand at San Francisco, California, this 9th day of May 1922.

PETER J. MORCK. 

